Improvement in casting types



y UNITE'Di. STATES @Ferca A'raNlr f* JOHN BACHELDEIL 0F Bosfromaun SIMON. DQDYE'R,- OF CHELSEA, MASSA- 3'; oHUsn'r'rs; s'AID DYER' AssIeNoR "ro SAID meeuwen.

i' l IMPROVEMENT IN CASTING TYPES,

. Specification forming part of Letters Patent No 6,604, dnfcd July 21,1849.

To' all whom, it may concern; 1

' Beit known that we, JOHN BAOHELDER, of Boston, and SIMON D. DYER, of Chelsea,4 in

. the county of Suiolkzand State of Massachusetts, haveinvented anewand useful or`Im-l proved Machine for CastngiTy'pes, which machine is also applicable to the founding oi'. va-

rious other articles;` and we dohereby declare that the same is fully described and represented iu the following specification and ac` companyingdrawinga let-ters, figures, and referenees thereof'. .Y Of the said drawings, Figure 1-den otes a top n -view of our machine; Fig. 2, a side'elevation of it; Fig. 3, a vertical central andlongitudi-` nalsection of it; Fig. .4, avertical and transverse section taken'through thevessel for holding themelted metal and-conducting it to the molds. f v

yIn the said drawings, A exhibits an` endless chain extended around two polygonal or other n proper-shaped wheels, 'B C, theformer of which is fixed on a driving-shaft, D, while the latter is sustainedv by ,a forkedslide, E, which has a weight, F, connected to itby acord or .cha-iu, G, which is carried over a pulley orvsheave, H, and suspended therefrom, asseen in the drawings, the sailzlweight serving` the purpose of keeping the endless chain ful'ly'extended mi.; --d'erany enlargement or diminution of it, whichy Ina-y be created by changes-'of temperature. The said-chain 'is made to support end carry the mold-sections I I I, dac., each .of `which is attached to and upon some one of the links o f the chain, and extends beyond each of the two. endsof the same to the middle of the next link, and so aswhen the links are in line with eachother to ahnt against one 'end of the next adjacent mold-section, as seen in thedrawings.

The said series of mold-sections is made to'rest.

- and move in contact .with one or two vertical plates .or walls, K L, disposed with respect to them, as denoted in thegures, each of seid.` platesmaking, together with anytwo mold-sec-A tions, the boundaries of the matrix ofthe'body v ofatype,thesaid matrix bein'gcutd'ownward inA the end and-side of `each moldseetion, asseen at a a, Ste., in Figs. 1 and 4. The letter-matrix v or mold for the letter may be formed in or suitably applied to that link ofthe endless chain which is directly nnderneathqthe two ends of any-'two of .the mold-sections in contact. Inthe drawings, type-matrices a a, Snc., a a', 85e., are

ever, beformedin but one side, .in which case only one of thefplates-or-'walls KILwould be employed. Each of thesaid wallssh-oul'd ,have

a smallhole' or air-passage, c, made through it, as seen in Fig. 4, and insuch a position as to allow, air to pass through it and out from the matrix or mold of. the type -when and while 'l .the same is brought intothe position necessary .toreceive the melted type-metal and belled withit. The peculiar object of the s aidfhole is to allow the escape of air, which wouldotherwiseeither prevent orhi'nder the ad mission of. the metal into the mold, and by so doing be productive of injury to the type, as more or less metal will escape through thesaid orifice c,

and with the air such of-said'metal as 'may flow out will bythe movement of the endless chain and nioldsloe separatedfroml that inthe molds. .Should-under-auy circumstances one air-hole be deemed insu'ieient todischarge the air, two v o-r any other suitable number of sucllll holes may be made through Ithe plate'or .wa

-Directly over the series ofi-molds a'fvessel .o'r receptaclefM, for" holding molten metal is'ar ranged, the-seme having one or more suitable conductors leading from it in -such-n'lanner as v to convey the Infielted metal into either of the molds whenv it is brought :directly underneath one of the said conductors. vThis vessel may be constructed of any proper shape or material,

and Y may [be heated'on. kept at the nee'essary. temperatureby a furnace or any other couven'- ientme'ansso applied as to effect the'end de? sire I Y A From the above it will -be seenthat when the vessel 'M1 is charged with metal'or any compo`l sition in amolten state and the drivingf'shalft -is pritin-revolution-types'will-be successively, A .formed 'from the several matrices ormoldsas "fast as they are successively carri-ed directly underneath the sprue hole or holes. conductor or conductors,"frem,the said vessel .1

Wnnethe mole-sections are passing muts either ,one of the wheels of the chain they are' caused to separate from one another in such manner as to permit the types to drop or be .removed from between them.

XVe do not intend'to limit our invention to the casting or founding of any particular form or shape of types, or to the founding or custing of typesalone,- as it may notonly he adapted to the manufacture of types of various shapes, but of various other things or matters usually made from metal'or other materia-l when in a melted state.

What we claim as our invention is- A combination of machinery maden-poi' the -fol lowing elements or their mechancalequivalents, the sameconsistrng of the endless chain W'itnesses:

R. EDDY, F. GoULD. 

